Need to clean some overspray off 223 glazing. Not done by me, acquired as such. What’s the best way without compromising the glazing? Estimated to be 5 year old paint on said windows.

razor blade and elbow grease. Tried and true method used since glass and paint were invented. Spritz a little water on the paint as you scrape. Watch your blade as they dull fairly quick. Use American made blades, the chinese blades are brittle and will snap throwing the broken piece into your eye.